I liked that it was easy enough to start, but had all of the features we needed in order to help us get up-and-running quickly with our product development process! It can be expensive compared to other services out there if your team is small or just getting started -- not worth using only one person on a project unless they have significant experience building apps like this because those costs are pretty high comparatively speaking. We used it as an internal tool within Google Apps so having something built specifically for our needs made sense since we were already paying them for their platform.